Shielding socket with two pieces contacts and two pieces housing components

Abstract

An electrical connector for electrically connecting a chip module with a printed circuit board includes an upper component, a lower component assembled on the upper component and a number of terminals, the upper component includes a number of upper tabs and the lower component includes a number of lower tabs. The terminals include a number of upper terminals and a number of lower terminals matched with the upper terminals. The upper terminals received in the upper component and the lower terminals received in the lower component; wherein the pressing of the terminal can transform the vertical movement of the upper terminal to the horizontal movement of the lower terminal.

What is claimed is: 
     
       1. An electrical connector electrically connecting a chip module to a printed circuit board, and comprising:
 an insulative housing; 
 a plurality of terminals comprising a plurality of upper terminals and a plurality of lower terminals matched with the upper terminals, the upper terminals and the lower terminals are received in the insulative housing; wherein 
 the lower terminal comprises a base portion and a spring beam extending upwardly from the base portion, the upper terminal presses the spring beam of the lower terminal moving downwardly and the upper terminal slides along the spring beam at the same time. 
 
     
     
       2. The electrical connector as claimed in  claim 1 , wherein said upper terminal comprises a main body and a projecting portion extending downwardly from the main body and protruding from a side of the main body, the projecting portion presses the spring beam moving downwardly and the projecting portion slides along the spring beam at the same time. 
     
     
       3. The electrical connector as claimed in  claim 2 , wherein said projecting portion presses the spring beam moving downwardly and also pushes the spring beam of the lower terminal moving in horizontal. 
     
     
       4. The electrical connector as claimed in  claim 2 , wherein the top of the main body has a V-cut for connecting the chip module stably. 
     
     
       5. The electrical connector as claimed in  claim 1 , wherein said insulative housing comprises an upper component that has a plurality of upper tabs and a lower component assembled on the upper component that has a plurality of lower tabs. 
     
     
       6. The electrical connector as claimed in  claim 5 , wherein said upper component comprises a first base and the first base comprises a top surface, a bottom surface opposite to the top surface, a plurality of upper receiving slots depressed from the bottom surface and a plurality of terminal receiving passageways depressed from the top surface, the terminal receiving passageways are communicated with the upper receiving slots respectively. 
     
     
       7. The electrical connector as claimed in  claim 6 , wherein said first base also comprises a plurality of receiving holes penetrated from the top surface to the bottom surface and the receiving holes are communicated with the upper receiving slots. 
     
     
       8. The electrical connector as claimed in  claim 7 , wherein said upper tab comprises a first tab protruding from the top surface, a second tab protruding from the bottom surface and an upper connecting portion connected the first tab with the second tab. 
     
     
       9. The electrical connector as claimed in  claim 8 , wherein an area of the upper connecting portion exposed in the receiving hole is plated with the metal layer, the metal layer extending upwardly to connect with the first tab and extending downwardly to connect with the second tab. 
     
     
       10. The electrical connector as claimed in  claim 5 , wherein said lower component comprises a second base and the second base comprises an upper surface, a lower surface opposite to the upper surface and a plurality of lower receiving slots penetrated from the upper surface to the lower surface. 
     
     
       11. The electrical connector as claimed in  claim 10 , wherein the lower tab comprises a third tab protruding from the lower surface, a fourth tab protruding from the lower surface and a lower connecting portion connected the third tab with the fourth tab. 
     
     
       12. The electrical connector as claimed in  claim 11 , wherein an area of the lower connecting portion exposed in the lower receiving slot is plated with the metal layer, the metal layer extending downwardly to connect the third tab and the metal layer extending upwardly to connect the fourth tab. 
     
     
       13. The electrical connector as claimed in  claim 10 , wherein said upper terminal is received in the terminal receiving passageway and the upper receiving slot, the lower terminal is received in the upper receiving slot and the lower receiving slot. 
     
     
       14. The electrical connector as claimed in  claim 1 , wherein said upper tab and the lower tab are wedge-shape that have been reversed. 
     
     
       15. The electrical connector as claimed in  claim 1 , wherein said electrical connector also comprises an area that the upper tab contacts with the lower tab is plated with a metal layer. 
     
     
       16. An electrical connector comprising:
 an insulative lower housing defining a plurality of lower passageways extending therethrough in a vertical direction between two opposite upper and lower surfaces thereof; 
 a plurality of lower contacts disposed in the corresponding lower passageways, respectively, each of said lower contacts defining, around an upper part thereof, a resilient lower abutment section deflectable in both the vertical direction and a transverse direction perpendicular to said vertical direction; 
 an insulative upper housing stacked upon the lower housing and defining a plurality of upper passageways extending therethrough, respectively in alignment with the corresponding lower passageways, along the vertical direction between two opposite top and bottom surfaces thereof; and 
 a plurality of upper contacts disposed in the corresponding upper passageways, respectively, each of said upper contacts defining, around a lower part thereof, an upper abutment section constantly abutting against the lower abutment section of the corresponding lower contact; wherein 
 during operation, the upper contact is wholly moved in the upper passageway simply in the vertical direction; a lower part of the lower contact is fixed without movement in the lower passageway while the upper part of the lower contact is moved in the lower passageway in both said vertical direction and said transverse direction. 
 
     
     
       17. The electrical connector as claimed in  claim 16 , wherein the upper housing further defines a plurality of projecting posts downwardly extending beyond the bottom surface and into the corresponding lower passageways, respectively; the lower housing further defines a plurality of projecting posts upwardly extending beyond the upper surface and into the corresponding upper passageways and mechanically and electrically connected to the corresponding upper projecting posts, respectively. 
     
     
       18. The electrical connector as claimed in  claim 16 , wherein the upper abutment section defines an arc shape to comply with vertical and transverse movement of the lower abutment section. 
     
     
       19. An electrical connector comprising:
 an insulative lower housing defining a plurality of lower passageways extending therethrough in a vertical direction between two opposite upper and lower surfaces thereof; 
 a plurality of lower contacts disposed in the corresponding lower passageways, respectively, each of said lower contacts defining a lower abutment section around an upper part thereof; 
 an insulative upper housing stacked upon the lower housing and defining a plurality of upper passageways extending therethrough, respectively in alignment with the corresponding lower passageways, along the vertical direction between two opposite top and bottom surfaces thereof; and 
 a plurality of upper contacts disposed in the corresponding upper passageways, respectively, each of said upper contacts defining, around a lower part thereof, an upper abutment section constantly abutting against the lower abutment section of the corresponding lower contact; wherein 
 the upper housing further defines a plurality of projecting posts downwardly extending beyond the bottom surface and into the corresponding lower passageways, respectively; the lower housing further defines a plurality of projecting posts upwardly extending beyond the upper surface and into the corresponding upper passageways and mechanically and electrically connected to the corresponding upper projecting posts, respectively. 
 
     
     
       20. The electrical connector as claimed in  claim 19 , wherein during operation, the upper contact is wholly moved in the upper passageway; a lower part of the lower contact is fixed without movement to retain a corresponding solder ball while the upper part of the lower contact is moved in the lower passageway.